of leicester



C. M. BAGSHAWr LASTING MACHINE.

APPLICATION FILED APR-8.1918.

1,318,827. Patented Oct. 1451919.

UNITED STATES PATENT onnron.

CHARLES MARTIN BAGSI-IAW, 0F LEICESTER, EN'GLAN'D, ASSIG-NOR T0 GIMSON' & CO. (LEICESTER) LIMITED, OF LEICESTER, ENGLAND, A CORPORATION OF GREAT BRITAIN.

Application filed April 8, 1918. Serial No. 227,195.

To all whom it may concern:

Be it known that I, CHARLES MARTIN BAG- sHAw, a subject of the King of Great Britain, residing at 3 St. Saviours Hill, Leicester, England, have invented an Improvement in or Relating to Lasting-Machines, of which the following is a specification.

This invention relates to lasting machines and concerns those provided with mechanism for cutting or slitting the edges of the upper material as for instance the machine described in British Specification No. 5966 of 1901.

The present invention comprises an improvement in connectionwith the mechanism for advancing and retracting the cutters, and while it is mainly applicable to mechanism of the character described in the aforesaid specification it is not necessarily to be regarded as being limited in this direction as it may be found to admit of application in other machine mechanism of similar character. I

Inthe machine described in the aforesaid specification, a' suitably actuated rack-bar meshes with arack-pinion which, in turn, intermeshes with a rack-slide adapted for endwise movement in the frame. A cuttercarrying bar has connection with the rackslide to be moved endwise therewith and a spring is combined with the rack-pinion and operates normally for holding the cuttercarrying bar in the retracted position.

A downward movement imparted to the rack-bar effects, through the medium of the rack-pinion and rack-slide, an advancement of the cutter carrying bar, while an upward movement of the rack-bar causes the cuttercarrying bar to be'retracted.

The rack pinion is in the form of a double segment having two sets'of teeth at different radii, one set of teeth meshing with the rack-bar, while the other set of teeth mesh with the rack-slide. The normal'position of the cutter-carrying bar is determined by the contact of one end of the larger segment 'with a shoulder or fixed abutment on the frame. r i 7 It is found that the shock caused by the very sudden.

Specification of Letters Patent.

LAsrINe-MAcnrnn.

Patented Oct. 14., 1919.

reduce the concussion as to obviate the breakage of the teeth.

The device iszp'referably spring controlled and replaces the fixed shoulder or abutment so that upon the end of the segment making contact therewith it will yield and act in the manner of a spring bufier.

In further describing the invention reference will be made to the accompanying drawlng wherein a device of convenient form and constituting an example of the invention applied to the machine of the aforesaid specification is illustrated.

In the drawing Y Figurel is a sectional side elevation of the part of the machine concerned by the present invention and shows the cushionin or yielding device applied thereto.

Fig. 2 is a perspective front view ofthe said cushioning or yielding device.

Fig. 3 is a perspective view of the arresting member of said device per se.

Fig. 4 is a detail perspective view of the cutter bars and their operating mechanism.

Like parts are designated by the same reference characters in the several figures of the drawing, and those parts of the machine of the aforesaid specification which are shown in the present-drawing, and hereinafter referred to are indicated by the same reference characters as those employed in the said prior specification.

As previously mentioned, the present invention is concerned with the mechanism in a lasting machine for advancing and retracting the slitting cutters.

In the machine, part of which is shown in Figs. 1 and 4 of the presentdrawing, this of vertical sliding movement a rack-pinion 52 having one set of teeth engaging. with the a 1 teeth on the rack-bar and another set of teeth arranged in mesh with the teeth on the rack-slide 54, and a spring 76. The cutter 62 is carried on a bar 58 having connection'with the rack-slide 54:. The spring 7 6 operates normally for holding the pinion 52 ment being imparted to the rack-bar 4% by the means described in the aforesaid specification, the rack-pinion 52 is caused'to turn in the direction indicated by the arrow (Fig. 1)," thereby imparting endwi-semovement to the rack-slide 54 in the frame 56 and advancing the cutter 62; Movement of the Parts referred to in ail-opposite direction for the purpose of retracting the cuttercarrying bar-58 and cutter62 has been arrested by the contact of the end 52 of the segment 52*, with a shoulder or fixed abutment, but according to the present improvement a yielding member is provided to constitute a: stop for the same purpose.

In the emb'o'din'ien-t shown the yielding arresting device is in the form of a rocker amounted on a pin or screw. 1) and having its end a suitably shaped to occupy a'position over the end 52 of the segment 52 -This rocker is controlledv by a slidable spring actuated plunger pin (Z furnished with -a fiat head 6 which presses upon afiat face on a rocker a. The arrangement is such that 'the rocker when: turned upon its pin 6 moves the plunger pin (Z In its housing 9' against the action of the controlling spring h. Upon the end 52 of the segment 52" making contact with the end 0 of the rocker a, the

latter can, if necessary, yield under the force of the blow by tr'irn ing' on its pin 5 and s'o'act 1nthe manner of a cushion, the spring "controlled plunger (Z serving .to allow th necessary yield and return the rocker to the normal position: afterward.

As described in the specification before referred to, the machine. is equipped with two cutter-carrying bars each having mechanism such asalready described herein for advancing and retracting same.

The relative arrangement of the bars and their operating mechanisms is shown in Fig.

i, in which the second bar (i-i, carrying a cutter 66, is shown as operated by the rack bar 50', through the rack pinion 72 and rack slide Conveniently the same rocker a of the device shown in the present drawing serves to constitute the yieldinqstop for the segment of each cutter-carrying bar, for which purpose its opposite ends 0 and i are formed as shown in Figs. Qan'd' 3-to extend one over each segment 52* and 72 (Fig. 4:), the rocker moving in either one direction or the other according to which segment end engages the same. I 1 r The rocker a is mounted by its screw 6' (Figs. 1 and 2) .upon the cover plate y of the fram'e56 said plate and frame being cut away as shown at 70 at each side for the passage and movement ofthe shaped.

ends 0" allele of the rocker 0;

The housing "9' of the plu'ngerpin (Z is attached to the cover plate 7' by screws Z.

The invention is not to beconfined to the particular form of yielding arresting device hereinbefore described as it will be obvious that a buffer of other form might effectively be employed to obviate shock. For instance, the segment may make contact with a spring pressed sliding pin or plungeri. The details of construction may also be varied without departing from the scope of the invention defined by the appended claims. f

'What I claim then'is:

1-. In a lasting machine, the combination with means for cutting or slitting the edges of the work including a cutter and mecha nism for advancing and retracting the same,

of cushioning means constructed and arranged to arrest the retracting movement of. said mechanism, to obviate or reduce concussion for the purpose described.

2'. In a lasting machine, the combination with means for cutting or slitting the edges of the work includingv a cutter and mechanism for advancing and retracting the same, of a spring controlled member arranged to constitute a stop for a part of the retractingmechanism and upon contact of said part therewith to move against the action of its controlling spring to absorb the shock of the arrest.

3. In a lasting machine, the combination with means for cuttlng or slitting the edges of the work including a cutter and mechanism for advancing and retracting the same, a of a plvotally mounted rocker bar having Its end formed to constltute an-arrestlng abutment for a part of the retracting mechanism, a flat face on said rocker bar, and a 's rin actuated lun 'er in bearin 11 on b b 25 said fiat face, for the purpose described.

4. In a lasting machine, the combination with means for cutting or slitting the edges of the work including a critter and mechanism for advancing and retractlng the same,

of a pivotally mounted rocker bar having its end formed to constitute an arresting abutment for a part of the retracting mechanism, a flat face on said rocker bar, a h0usng, a plunger p111 slidable withln said housing, and bearing upon the face on the rocker bar, and a spring in said housing to actuate the plunger pin, for the purpose described. 7 Y

5-. In a lasting machine, the combination with means for cutting or slitting the edges of the work including a pair of cutters and mechanism for advancing and retracting each cutter, of a spring controlled member arranged to constitute a stop for a part of the retracting mechanism of each cutter and upon contact of said part therewith to act 6. In alasting' machine, the combination with means for cuttingor slitting the edges of the work including a pair of cutters and mechanism for advancing and retracting each cutter, ofa pivotally mounted rocker bar, and spring actuated means to control the movements of said rocker bar, and an abutment on each end of said rocker-bar, said abutments constituting stops for a part of the retracting mechanism of the respective cutters for the purpose of arresting the movement of same without shock.

7. In a lasting machine, the combination with means for cutting or slitting the edges of the work including a pair of cutters and mechanism for advancing and retracting each cutter, a pivotally mounted rocker .bar, arresting abutments on opposite ends of said rocker bar adapted for the contact of a part of the retracting mechanism of the respective cutters therewith, a fiat face on said rocker bar, and a spring actuated plunger pin bearing upon said face to control the movements of said bar in both directions, for the purpose described.

8. In a lasting machine the combination with means for cutting or slitting the edges of the work including a pair of rack-slides, a rack-pinion for each rack-slide, a rack-bar for actuating each rack-pinion to advance the rack-slide, and a spring to actuate each rack pinion to retract the rack-slide, of a pivotally mounted rocker-bar, an abutment on each end of same to constitute an arresting stop for the respective rack-pinion, and a spring actuated device to control the movements of the rocker bar and enable it to yieldingly arrest the retracting movement of either of the rack-pinions, substantially as described.

9. In a lasting machine, in combination, a pair of cutters, a carrying-bar for each cutter, a rack-slidefor each carrying-bar, a rack-pinion for each rack-slide, a rack-bar to actuate each rack-pinion in one direction to advance the respectiverack-slide, carrying-bar and cutter, a spring to actuate each rack-pinion in the opposite direction to retract said parts, a pivotally mounted rocker bar, an abutment on each end. of said rocker bar adapted to be engaged by the respective rack-pinions, a flat face on said rocker-bar, a housing, a plunger pin slidable within said housing, a flat head on said plunger pin bearing upon the flat face of the rocker bar, and a spring in said housing acting upon the plunger pin whereby the rocker bar is capable of a controlled yielding movement to arrest the retracting movement of either rack-pinion, substantially as and for the purpose described.

In testimony whereof, I have signed myname to this specification.

CHARLES MARTIN BAGSHAW.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

